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Appl. Sci. 2017, 7(1), 2; doi:10.3390/app7010002

Leak Detection in Water-Filled Small-Diameter Polyethylene Pipes by Means of Acoustic Emission Measurements

Department of Engineering for Industry (DIN), University of Bologna, V.le del Risorgimento 2, Bologna 40136, Italy
A preliminary and partial version of this paper was presented at the 8th International Conference on Urban Rehabilitation and Sustainability (URES’16), Rome, Italy, 21–23 October 2016.
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Author to whom correspondence should be addressed.
Academic Editors: Tomoki Shiotani and Dimitrios G. Aggelis
Received: 24 November 2016 / Revised: 13 December 2016 / Accepted: 16 December 2016 / Published: 22 December 2016
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Abstract

The implementation of effective strategies to manage leaks represents an essential goal for all utilities involved with drinking water supply in order to reduce water losses affecting urban distribution networks. This study concerns the early detection of leaks occurring in small-diameter customers’ connections to water supply networks. An experimental campaign was carried out in a test bed to investigate the sensitivity of Acoustic Emission (AE) monitoring to water leaks. Damages were artificially induced on a polyethylene pipe (length 28 m, outer diameter 32 mm) at different distances from an AE transducer. Measurements were performed in both unburied and buried pipe conditions. The analysis permitted the identification of a clear correlation between three monitored parameters (namely total Hits, Cumulative Counts and Cumulative Amplitude) and the characteristics of the examined leaks. View Full-Text
Keywords: leak detection; Acoustic Emission; service pipe; customer connection; water supply network leak detection; Acoustic Emission; service pipe; customer connection; water supply network
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Martini, A.; Troncossi, M.; Rivola, A. Leak Detection in Water-Filled Small-Diameter Polyethylene Pipes by Means of Acoustic Emission Measurements. Appl. Sci. 2017, 7, 2.

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